Published Paper Details:

A cloud-based big data sharing system utilizes a storage facility from a cloud service provider to share data with legitimate users. In traditional solutions, cloud provider stores the shared data in the huge data point outside the trusted authority of the data owner, which may produce insecurity for information confidentiality. In order to overcome this Enhanced Secret Sharing Cluster Key management (ESSCK) protocol is proposed. For this purpose first, an Enhanced Secret Sharing scheme is used to construct faster encryption and decryption process. Second, a Logical Key Hierarchy (LKH) is used to process a simple and effective key numbering method. By using this technique the new user and the previous user cannot predict the new key from the cloud. To meet the protocol forward security and backward security the Logical Key Hierarchy (LKH) method is proposed. Simulation results using CloudSim tool is used to shows that, LKH has improved security and the protocol ESSCK could significantly reduce the computation cost of cluster user in the rekeying process.